Heavy Truck Traffic Moves Through Milwaukee Daily
Major highways like I-94, I-43, and I-794 carry high volumes of commercial truck traffic across the city. More than 1,300 trucks a day crossed the Hoan Bridge on I-794 in 2022, according to WisDOT.
Milwaukee Jackknife Truck Accident Lawyer
Legal Representation for Victims of Dangerous Semi-Truck Jackknife Crashes
Jackknife truck accidents are among the most severe and destructive types of roadway collisions. If you or a loved one was injured in a jackknife accident in Milwaukee, you may be entitled to compensation.
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Expert Legal Representation by Toby P. Mulholland
Your Trusted Injury Lawyer
Since launching his law practice in 2000, Toby P. Mulholland has been a dedicated advocate for clients suffering serious injuries. He has extensive experience handling a wide range of personal injury cases, including motor vehicle accidents, wrongful death claims, construction accidents, premises liability, dog bite cases, and catastrophic injury litigation.
Toby’s distinguished career is marked by his skill in litigation, participating in numerous trials, mediations, arbitrations, and depositions. His innovative approaches to depositions have consistently resulted in successful outcomes for even the most complex cases. Clients appreciate his ability to navigate high-stakes situations with a creative, results-oriented approach.
Licensing and Professional Associations
- Licensed to practice law in Illinois, Arizona, and Wisconsin
- Member of the Arizona Association for Justice
- Member of the Illinois Trial Lawyers Association
Jackknife Truck Crashes in Milwaukee
When a large commercial truck loses control and its trailer swings outward at an angle, it can block multiple lanes, trap nearby vehicles, and cause devastating chain-reaction crashes.
Mulholland Injury Law represents victims of complex truck accidents, helping them pursue claims against negligent drivers, trucking companies, and other responsible parties. Contact us today for a free consultation.
For crashes that did not involve a jackknife, see our Milwaukee truck accident lawyer page.
Large Trucks Can Weigh Up to 80,000 Pounds
The massive weight of semi-trucks increases the severity of crashes when control is lost. 80,000 pounds is the federal gross weight limit on the Interstate system without a special permit.
Winter Conditions Increase Jackknife Risk
Snow, ice, and reduced traction in Wisconsin winters make sudden braking more dangerous for tractor-trailers. In 2022, Wisconsin recorded 14,354 crashes on snow-covered roads and 8,837 on icy roads.
Improper Braking Is a Leading Cause of Jackknife Accidents
Hard or sudden braking can cause trailers to swing out of alignment with the cab.
Sources: WisDOT I-794 Lake Interchange study 23 U.S.C. § 127 WisDOT 2022 Crash Facts
What Is a Jackknife Truck Accident?
A jackknife accident occurs when a tractor-trailer folds at the connection point between the cab and the trailer, forming a sharp angle similar to a folding knife. This loss of alignment often causes the trailer to swing uncontrollably across lanes of traffic.
Once a truck jackknifes, the driver has limited ability to regain control. The vehicle may skid, spin, or collide with multiple vehicles, creating a high-risk situation for everyone on the road.
- The cab brakes or slows suddenly.
- The trailer pivots at the hitch, called the fifth wheel.
- The trailer swings out across the lanes beside it.
- Where the trailer would normally be, following straight behind the cab.
Why Jackknife Accidents Are So Dangerous?
The size and weight of commercial trucks make jackknife accidents especially hazardous. A fully loaded semi-truck can weigh up to 80,000 pounds, and when that mass shifts suddenly, the force of impact can be catastrophic.
These accidents often involve multiple vehicles and can lead to pileups, rollovers, or vehicles being crushed or pushed off the roadway. Victims may have little time to react, particularly in high-speed highway conditions.
In 2022, 4,476 tractor-trailers were involved in Wisconsin crashes, 39 of them in fatal crashes and 692 in crashes that injured someone. WisDOT 2022 Crash Facts
Common Causes of Jackknife Accidents in Milwaukee
Jackknife crashes are typically the result of driver error, mechanical failure, or unsafe road conditions.
Common contributing factors include:
Contributing factor
The safety rule it can involve
Sudden or improper braking
Federal rules have required anti-lock brakes on truck tractors built since March 1, 1997 and air-braked trailers built since March 1, 1998, to help keep the rig stable when the driver brakes hard. 49 CFR § 393.55
Driving too fast for road or weather conditions
Wisconsin law requires drivers to slow down when weather or highway conditions create a special hazard, even below the posted limit. Wis. Stat. § 346.57(3)
Slippery roads due to rain, snow, or ice
Truck drivers must use extreme caution and reduce speed when snow, ice, sleet or rain affects traction, and must stop driving if conditions become sufficiently dangerous. 49 CFR § 392.14
Improperly loaded or unbalanced cargo
Cargo must be secured so it cannot shift in a way that affects the vehicle’s stability or maneuverability. 49 CFR § 393.100
Driver inexperience or inadequate training
Since February 7, 2022, first-time Class A and Class B commercial license applicants must complete entry-level driver training from a provider on FMCSA’s Training Provider Registry. 49 CFR Part 380
Equipment failure, including brake or tire issues
Motor carriers must systematically inspect, repair and maintain the trucks and trailers they control. 49 CFR § 396.3
Fatigue or violation of hours-of-service regulations
Property-carrying drivers may drive no more than 11 hours after 10 consecutive hours off duty, may not drive after the 14th hour on duty, and need a 30-minute break after 8 hours of driving. 49 CFR § 395.3
In Milwaukee, winter weather and icy roads significantly increase the likelihood of trailer instability and loss of control.
Milwaukee-Specific Risk Factors
Truck traffic through Milwaukee is heavily influenced by major highways such as I-94, I-43, and I-794. These high-traffic corridors are frequently used by commercial vehicles transporting goods across the Midwest.
Congestion, merging traffic, construction zones, and sudden weather changes create conditions where jackknife accidents are more likely to occur. Snow and ice during Wisconsin winters can make braking unpredictable, increasing the risk of trailer swing.
I-94 East-West corridor
Carries roughly 158,000 to 178,000 vehicles on an average weekday, based on WisDOT’s 2019 counts, and WisDOT reports crash rates in the corridor up to two to three times the statewide average.
Reconstruction began in late 2025, bringing lane shifts and lane and ramp closures to the West Leg between 70th Street and Zablocki Drive and to the Early East Leg near 27th Street.
WisDOT I-94 East-West project Construction updatesI-794 and the Hoan Bridge
The main truck route to Port Milwaukee. WisDOT estimates 75,000 to 100,000 truck trips a year to the port, counted more than 1,300 trucks a day on the Hoan Bridge in 2022, and found nearly 500 oversize or overweight loads used I-794 from 2018 to 2022.
WisDOT I-794 Lake Interchange studyI-43 and the interchanges
I-43 shares the freeway with I-94 between the Marquette and Mitchell interchanges, where through trucks, downtown traffic and merging lanes meet, and lane changes near the ramps can force sudden braking.
Who writes the crash report
The Milwaukee County Sheriff’s Office patrols the expressways in Milwaukee County, so a jackknife on I-94, I-43 or I-794 is usually documented by the Sheriff’s Office. Its Public Records Division at 821 W. State St. handles crash report requests, (414) 226-7085. Crashes on city streets are usually handled by the Milwaukee Police Department, and WisDOT sells reportable Wisconsin crash reports online.
Milwaukee County Sheriff: public records MPD: crash reportsContact Us Today at (414) 286-9299 or Message Us Online to Schedule a Free Consultation
Injuries Resulting From Jackknife Accidents
Due to the force and scale of these crashes, injuries are often severe or life-threatening.
Even survivors may face long-term medical treatment, rehabilitation, and permanent disability.
Victims may suffer traumatic brain injuries, spinal cord damage, fractures, internal organ injuries, severe lacerations, burns, and soft tissue injuries. Multi-vehicle collisions can also lead to fatal injuries, particularly when smaller vehicles are struck or crushed by a truck.
Who Can Be Held Liable in a Jackknife Truck Accident?
Liability in truck accident cases is often complex and may involve multiple parties.
Responsible parties may include:
- The truck driver
- The trucking company or employer
- Cargo loading companies
- Maintenance providers
- Truck or parts manufacturers
- Third-party contractors
Trucking companies may be liable for inadequate training, poor maintenance, or violations of federal safety regulations. Identifying all responsible parties is critical to maximizing compensation.
Federal and State Trucking Regulations
Commercial trucking is governed by strict federal regulations, including those set by the Federal Motor Carrier Safety Administration (FMCSA).
These rules cover driver hours, vehicle maintenance, cargo securement, and safety standards. Violations of these regulations can serve as key evidence in proving negligence.
Our legal team examines driver logs, inspection records, maintenance reports, and company policies to uncover violations that may have contributed to the accident.
6 months
Federal rules only require motor carriers to keep drivers’ records of duty status and supporting documents for six months. That is why it matters to have a lawyer ask the company to preserve its logs, black box data and maintenance records as soon as possible. 49 CFR § 395.8
$750,000
For-hire carriers hauling general freight across state lines in trucks of 10,001 pounds or more must carry at least $750,000 in liability coverage, and certain hazardous materials require up to $5 million. 49 CFR § 387.9
Compensation Available for Jackknife Accident Victims
Victims of jackknife accidents may be entitled to significant compensation due to the severity of injuries involved.
This may include medical expenses, hospitalization, rehabilitation, lost wages, reduced earning capacity, pain and suffering, permanent disability, and future medical care. In fatal cases, surviving family members may pursue wrongful death damages.
Because these cases often involve substantial damages, insurance companies aggressively defend against claims, making experienced legal representation essential.
Wisconsin deadlines and fault rules
- 3 years
- to file an injury lawsuit in most cases. Wis. Stat. § 893.54
- 2 years
- to file a wrongful death lawsuit arising from a motor vehicle accident, under § 893.54(2m).
- 120 days
- to serve written notice of the claim, generally, if a City of Milwaukee, Milwaukee County or other government vehicle or employee may be responsible, under Wis. Stat. § 893.80.
- 51% bar
- You can still recover if your negligence was not greater than that of the party you are seeking damages from, but your award is reduced by your share of the fault. Wis. Stat. § 895.045
What to Do After a Jackknife Truck Accident?
Taking the right steps after an accident can protect your health and strengthen your case.
Seek immediate medical attention, report the accident to authorities, document the scene if possible, gather witness information, avoid speaking with insurance companies without legal advice, and contact a truck accident attorney as soon as possible.
Preserving evidence early is especially important in trucking cases.
- Get medical care even if you feel fine at the scene.
- Call 911 so the Sheriff’s Office or police document the crash.
- Photograph the trailer’s position, skid marks, road conditions and the truck’s company name and USDOT number.
- Collect witness names and phone numbers.
- Refer the trucking insurer to your lawyer before giving any statement.
- Call us so we can ask the carrier to preserve its logs and truck data.
How Mulholland Injury Law Can Help?
Jackknife accident cases require a detailed investigation and a strong legal strategy.
Our firm works with accident reconstruction experts, reviews trucking records, analyzes crash data, and handles negotiations with insurance companies. We prepare every case as if it will go to trial, ensuring that your claim is taken seriously.
Why Choose Mulholland Injury Law?
We understand the complexity and severity of truck accident cases. Our team is committed to holding negligent parties accountable and securing compensation that reflects the full impact of your injuries.
From initial consultation to case resolution, we provide focused, results-driven representation.
Jackknife Truck Accident FAQs
What causes a truck to jackknife?
A jackknife happens when the cab slows or changes direction faster than the trailer, so the trailer pivots at the hitch and swings out. Hard braking, speed that is too fast for snow or ice, unbalanced cargo, brake or tire failures and driver fatigue are common contributing factors.
Is the truck driver always at fault in a jackknife crash?
Not always, but often. Federal rules require truck drivers to slow down and use extreme caution on slippery roads and to stop driving when conditions become too dangerous, so weather conditions do not automatically excuse the driver. The trucking company, a cargo loader or a maintenance shop may share responsibility.
Who investigates a jackknife on a Milwaukee freeway?
The Milwaukee County Sheriff’s Office patrols the expressways in Milwaukee County, so a jackknife on I-94, I-43 or I-794 is usually documented by the Sheriff’s Office. Crashes on city streets are usually handled by the Milwaukee Police Department.
How long do I have to file a claim after a jackknife accident in Wisconsin?
Most injury lawsuits must be filed within 3 years. Wrongful death claims from a motor vehicle accident must be filed within 2 years, and claims involving a government vehicle generally require written notice within 120 days.
What if I was partly at fault?
Under Wisconsin’s comparative negligence law, you can still recover if your share of the fault was not greater than the party you are claiming against, but your award is reduced by your percentage of fault.
Why should I contact a lawyer quickly after a truck crash?
Federal rules only require carriers to keep drivers’ duty status records for six months, and truck data can be overwritten. A prompt preservation request helps protect the logs, electronic data and maintenance records that often prove what went wrong.
Free Consultation With a Milwaukee Jackknife Truck Accident Lawyer
If you or a loved one has been injured in a jackknife truck accident in Milwaukee, you do not have to navigate the legal process alone.
Mulholland Injury Law offers free consultations, and you pay nothing unless we recover compensation for you.
Contact us today to discuss your case and take the first step toward recovery.
Contact a Personal Injury Lawyer in Milwaukee Today
At Mulholland Injury Law, we are committed to providing aggressive legal representation for victims of personal injury accidents.
Summarized from the Wisconsin Statutes, the Code of Federal Regulations, WisDOT and the Milwaukee County Sheriff’s Office as of October 2026. This is general information, not legal advice. Deadlines have exceptions, so talk to a lawyer about the dates in your case.